Eskimos have a variety of words for snow. Similarly, dirt-trackers have descriptive language for dirt, like "cushion" where the dirt is loose, moist and very consistent so you can feel the tire bite. It can have an even finer distinction if it is a "deep cushion." The dirt can become a "blue groove," where tire rubber builds up and becomes bluish in color and very grippy. That usually happens on the pole-the tight and low, inside line. You can hear the tires squeal from the grip on it. When that happens, they might say the track "grooved up." Where there is loose stuff over hard pack, it's called "fuzzy"-traction is vague and it's slippery. The dirt can be "tacky" even if it doesn't groove up, and so on. Suspension adjustments, gearing, shut-off points, tire pressures, steering-damper settings, where you ride and how you ride all depend on what character the dirt has that day.